mirror of
https://github.com/pretix/pretix.git
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293 lines
12 KiB
Python
293 lines
12 KiB
Python
import hashlib
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import json
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import logging
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from urllib.parse import urljoin
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from django.conf import settings
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from django.contrib.staticfiles import finders
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from django.core.files.base import ContentFile
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from django.core.files.storage import default_storage
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from django.db.models import Q
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from django.http import FileResponse, Http404, HttpResponse, JsonResponse
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from django.template import Context, Engine
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from django.template.loader import get_template
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from django.utils.formats import date_format
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from django.utils.timezone import now
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from django.utils.translation import gettext
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from django.views import View
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from django.views.decorators.cache import cache_page
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from django.views.decorators.http import condition
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from django.views.i18n import (
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get_formats, get_javascript_catalog, js_catalog_template,
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)
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from lxml import etree
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from pretix.base.i18n import language
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from pretix.base.models import CartPosition, Voucher
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from pretix.base.services.cart import error_messages
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from pretix.base.settings import GlobalSettingsObject
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from pretix.base.templatetags.rich_text import rich_text
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from pretix.helpers.thumb import get_thumbnail
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from pretix.multidomain.urlreverse import build_absolute_uri
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from pretix.presale.views.cart import get_or_create_cart_id
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from pretix.presale.views.event import (
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get_grouped_items, item_group_by_category,
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)
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logger = logging.getLogger(__name__)
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def indent(s):
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return s.replace('\n', '\n ')
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def widget_css_etag(request, **kwargs):
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return request.event.settings.presale_widget_css_checksum or request.organizer.settings.presale_widget_css_checksum
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def widget_js_etag(request, lang, **kwargs):
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gs = GlobalSettingsObject()
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return gs.settings.get('widget_checksum_{}'.format(lang))
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@condition(etag_func=widget_css_etag)
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@cache_page(60)
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def widget_css(request, **kwargs):
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if request.event.settings.presale_widget_css_file:
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resp = FileResponse(default_storage.open(request.event.settings.presale_widget_css_file),
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content_type='text/css')
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return resp
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else:
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tpl = get_template('pretixpresale/widget_dummy.html')
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et = etree.fromstring(tpl.render({})).attrib['href'].replace(settings.STATIC_URL, '')
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f = finders.find(et)
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resp = FileResponse(open(f, 'rb'), content_type='text/css')
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return resp
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def generate_widget_js(lang):
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code = []
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with language(lang):
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# Provide isolation
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code.append('(function (siteglobals) {\n')
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code.append('var module = {}, exports = {};\n')
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code.append('var lang = "%s";\n' % lang)
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catalog, plural = get_javascript_catalog(lang, 'djangojs', ['pretix'])
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catalog = dict((k, v) for k, v in catalog.items() if k.startswith('widget\u0004'))
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template = Engine().from_string(js_catalog_template)
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context = Context({
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'catalog_str': indent(json.dumps(
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catalog, sort_keys=True, indent=2)) if catalog else None,
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'formats_str': indent(json.dumps(
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get_formats(), sort_keys=True, indent=2)),
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'plural': plural,
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})
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code.append(template.render(context))
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files = [
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'vuejs/vue.js' if settings.DEBUG else 'vuejs/vue.min.js',
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'pretixpresale/js/widget/docready.js',
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'pretixpresale/js/widget/floatformat.js',
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'pretixpresale/js/widget/widget.js',
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]
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for fname in files:
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f = finders.find(fname)
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with open(f, 'r') as fp:
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code.append(fp.read())
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if settings.DEBUG:
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code.append('})(this);\n')
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else:
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# Do not expose debugging variables
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code.append('})({});\n')
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return ''.join(code)
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@condition(etag_func=widget_js_etag)
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@cache_page(1 if settings.DEBUG else 60)
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def widget_js(request, lang, **kwargs):
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if lang not in [lc for lc, ll in settings.LANGUAGES]:
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raise Http404()
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gs = GlobalSettingsObject()
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fname = gs.settings.get('widget_file_{}'.format(lang))
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resp = None
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if fname and not settings.DEBUG:
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try:
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resp = HttpResponse(default_storage.open(fname).read(), content_type='text/javascript')
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except:
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logger.exception('Failed to open widget.js')
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if not resp:
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data = generate_widget_js(lang).encode()
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checksum = hashlib.sha1(data).hexdigest()
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if not settings.DEBUG:
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newname = default_storage.save(
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'widget/widget.{}.{}.js'.format(lang, checksum),
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ContentFile(data)
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)
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gs.settings.set('widget_file_{}'.format(lang), 'file://' + newname)
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gs.settings.set('widget_checksum_{}'.format(lang), checksum)
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resp = HttpResponse(data, content_type='text/javascript')
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return resp
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def price_dict(price):
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return {
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'gross': price.gross,
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'net': price.net,
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'tax': price.tax,
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'rate': price.rate,
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'name': str(price.name)
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}
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def get_picture(event, picture):
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return urljoin(build_absolute_uri(event, 'presale:event.index'), get_thumbnail(picture.name, '60x60^').thumb.url)
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class WidgetAPIProductList(View):
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def _get_items(self):
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items, display_add_to_cart = get_grouped_items(
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self.request.event, subevent=self.subevent, voucher=self.voucher
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)
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grps = []
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for cat, g in item_group_by_category(items):
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grps.append({
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'id': cat.pk if cat else None,
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'name': str(cat.name) if cat else None,
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'description': str(rich_text(cat.description, safelinks=False)) if cat and cat.description else None,
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'items': [
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{
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'id': item.pk,
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'name': str(item.name),
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'picture': get_picture(self.request.event, item.picture) if item.picture else None,
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'description': str(rich_text(item.description, safelinks=False)) if item.description else None,
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'has_variations': item.has_variations,
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'require_voucher': item.require_voucher,
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'order_min': item.min_per_order,
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'order_max': item.order_max if not item.has_variations else None,
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'price': price_dict(item.display_price) if not item.has_variations else None,
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'min_price': item.min_price if item.has_variations else None,
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'max_price': item.max_price if item.has_variations else None,
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'free_price': item.free_price,
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'avail': [
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item.cached_availability[0],
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item.cached_availability[1] if self.request.event.settings.show_quota_left else None
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] if not item.has_variations else None,
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'original_price': item.original_price,
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'variations': [
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{
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'id': var.id,
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'value': str(var.value),
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'order_max': var.order_max,
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'description': str(rich_text(var.description, safelinks=False)) if var.description else None,
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'price': price_dict(var.display_price),
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'avail': [
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var.cached_availability[0],
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var.cached_availability[1] if self.request.event.settings.show_quota_left else None
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],
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} for var in item.available_variations
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]
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} for item in g
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]
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})
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return grps, display_add_to_cart, len(items)
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def dispatch(self, request, *args, **kwargs):
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self.subevent = None
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if request.event.has_subevents:
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if 'subevent' in kwargs:
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self.subevent = request.event.subevents.filter(pk=kwargs['subevent'], active=True).first()
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if not self.subevent:
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raise Http404()
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else:
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raise Http404()
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else:
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if 'subevent' in kwargs:
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raise Http404()
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if 'lang' in request.GET and request.GET.get('lang') in [lc for lc, ll in settings.LANGUAGES]:
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with language(request.GET.get('lang')):
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return super().dispatch(request, *args, **kwargs)
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else:
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return super().dispatch(request, *args, **kwargs)
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def get(self, request, **kwargs):
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data = {
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'currency': request.event.currency,
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'display_net_prices': request.event.settings.display_net_prices,
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'show_variations_expanded': request.event.settings.show_variations_expanded,
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'waiting_list_enabled': request.event.settings.waiting_list_enabled,
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'error': None,
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'cart_exists': False
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}
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if 'cart_id' in request.GET and CartPosition.objects.filter(event=request.event, cart_id=request.GET.get('cart_id')).exists():
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data['cart_exists'] = True
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ev = self.subevent or request.event
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fail = False
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if not ev.presale_is_running:
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if ev.presale_has_ended:
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data['error'] = gettext('The presale period for this event is over.')
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elif request.event.settings.presale_start_show_date:
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data['error'] = gettext('The presale for this event will start on %(date)s at %(time)s.') % {
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'date': date_format(ev.presale_start.astimezone(request.event.timezone), "SHORT_DATE_FORMAT"),
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'time': date_format(ev.presale_start.astimezone(request.event.timezone), "TIME_FORMAT"),
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}
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else:
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data['error'] = gettext('The presale for this event has not yet started.')
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self.voucher = None
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if 'voucher' in request.GET:
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try:
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self.voucher = request.event.vouchers.get(code__iexact=request.GET.get('voucher').strip())
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if self.voucher.redeemed >= self.voucher.max_usages:
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data['error'] = error_messages['voucher_redeemed']
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fail = True
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if self.voucher.valid_until is not None and self.voucher.valid_until < now():
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data['error'] = error_messages['voucher_expired']
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fail = True
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cart_id = get_or_create_cart_id(request, create=False)
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if cart_id:
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redeemed_in_carts = CartPosition.objects.filter(
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Q(voucher=self.voucher) & Q(event=request.event) &
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(Q(expires__gte=now()) | Q(cart_id=get_or_create_cart_id(request)))
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)
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else:
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redeemed_in_carts = CartPosition.objects.filter(
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Q(voucher=self.voucher) & Q(event=request.event) & Q(expires__gte=now())
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)
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v_avail = self.voucher.max_usages - self.voucher.redeemed - redeemed_in_carts.count()
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if v_avail < 1:
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data['error'] = error_messages['voucher_redeemed']
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fail = True
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except Voucher.DoesNotExist:
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data['error'] = error_messages['voucher_invalid']
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fail = True
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if not fail and (ev.presale_is_running or request.event.settings.show_items_outside_presale_period):
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data['items_by_category'], data['display_add_to_cart'], data['itemnum'] = self._get_items()
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data['display_add_to_cart'] = data['display_add_to_cart'] and ev.presale_is_running
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else:
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data['items_by_category'] = []
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data['display_add_to_cart'] = False
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data['itemnum'] = 0
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vouchers_exist = self.request.event.get_cache().get('vouchers_exist')
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if vouchers_exist is None:
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vouchers_exist = self.request.event.vouchers.exists()
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self.request.event.get_cache().set('vouchers_exist', vouchers_exist)
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data['vouchers_exist'] = vouchers_exist
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resp = JsonResponse(data)
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resp['Access-Control-Allow-Origin'] = '*'
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return resp
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